Study: Choanaflagellates navigate to oxygen

CAMBRIDGE, England, Single-celled organisms called choanaflagellates, the closest relatives of animals, can sense oxygen levels. The ability allows the organisms, which form small colonies, to navigate to areas richest in…

Stephen Hawking hospitalized in Rome

ROME, ¬†Physics and cosmology master Stephen Hawking was hospitalized in Italy’s capital and underwent a series of tests, a spokesman for the academic said Friday. Hawking was admitted to Rome’s…